SR 202 - Evans & Patterson Creek - Fish Passage

Project news

  • July 2018: Requests from proposers will be advertised
  • Sign up for WSDOT's east King County newsletter

Needs & benefits

WSDOT will replace four culverts that pass under SR 202 between Redmond and Fall City. The culverts for Evans Creek, Patterson Creek and two unnamed tributaries to Patterson Creek pose a barrier for fish migration because the water flows too fast, is too shallow, and /or drops too rapidly. These culverts are subject to the 2013 U.S. District Court injunction requiring the state to remove culverts that block fish passage under state roads.

When the culverts are removed and replaced with fish-friendly structures, miles of rearing and spawning habitat will be opened up that became inaccessible when the roadway was built. Local stream restoration work, including more natural streambeds and planting of native shrubs and trees, will provide better habitat for the salmon and trout that use the streams, and will also be more inviting to other local wildlife. 


  • Winter 2018-spring 2019: initial design work
  • April 2018: WSDOT advertises a Request for Qualifications from contractors 
  • July 2018: WSDOT advertises a Request for Proposals from contractors
  • November 2018: A contractor is selected
  • Summer 2019: Construction begins
  • Fall 2020: Construction is scheduled for completion


  • The estimated total project cost is $12.92 million.
  • Connecting Washington, Pre-Existing Funds (PEF) and federal funds are being used for this project.


Kris Olsen

A small map showing the locations of the Evans and Patterson creeks culverts under SR 202 between Redmond and Fall City, Washington

A small photo showing the culvert that carries Patterson Creek under SR 202 between Redmond and Fall City, Washington